Error during activation of configuration XKB (Macbook 2.1)

error while trying to set the keyboard model of my macbook 2.1 from evdv to macbook/macbookPro
using lucid lynx (same error with karmic)

here is the message (in french, sorry)
Erreur lors de l'activation de la configuration XKB.
Ceci peut arriver dans diverses circonstances :
- une anomalie dans la bibliothèque libxklavier
- une anomalie dans le serveur X (outils xkbcomp, xmodmap)
- incompatibilité entre le serveur X et l'implémentation libxkbfile

Données sur la version du serveur X :
The X.Org Foundation
10706000

Si vous signalez cette anomalie, veuillez inclure :
- le résultat de xprop -root | grep XKB
- le résultat de gconftool-2 -R /desktop/gnome/peripherals/keyboard/kbd

[English]:
Error activating XKB configuration.
This can happen in various circumstances:
- An anomaly in the libxklavier library
- An anomaly in the X server (xkbcomp tools, xmodmap)
- Incompatibility between the X server and the implementation of libxkbfile

Data on the version of X server:
The X. Org Foundation
10706000

If you report this anomaly, please include:
- The result of xprop-root | grep XKB
- The result of gconftool-2 -R /desktop/gnome/peripherals/keyboard/kbd

[xprop-root | grep XKB]:
stefan@stefan-laptop:~$ xprop -root | grep XKB
_XKB_RULES_NAMES_BACKUP(STRING) = "evdev", "evdev", "fr", "mac", ""
_XKB_RULES_NAMES(STRING) = "evdev", "evdev", "fr", "mac", ""

[gconftool-2 -R /desktop/gnome/peripherals/keyboard/kbd]:
stefan@stefan-laptop:~$ gconftool-2 -R /desktop/gnome/peripherals/keyboard/kbd
 layouts = []
 options = []
 model = macbook79

/////////////////////////////////////////////////////////////////////////////////////////////////////

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xorg 1:7.5+5ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic i686
Architecture: i386
Date: Wed May 5 15:03:25 2010
DkmsStatus: Error: [Errno 2] Aucun fichier ou dossier de ce type
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
MachineType: Apple Inc. MacBook2,1
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-21-generic root=UUID=fe5b7db0-0873-4a6e-9c31-3e2f0c035dee ro quiet splash
ProcEnviron:
 LANG=fr_BE.UTF-8
 SHELL=/bin/bash
SourcePackage: xorg
Symptom: display
dmi.bios.date: 06/27/07
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MB21.88Z.00A5.B07.0706270922
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Mac-F4208CAA
dmi.board.vendor: Apple Inc.
dmi.board.version: PVT
dmi.chassis.asset.tag: Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-F4208CAA
dmi.modalias: dmi:bvnAppleInc.:bvrMB21.88Z.00A5.B07.0706270922:bd06/27/07:svnAppleInc.:pnMacBook2,1:pvr1.0:rvnAppleInc.:rnMac-F4208CAA:rvrPVT:cvnAppleInc.:ct10:cvrMac-F4208CAA:
dmi.product.name: MacBook2,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
glxinfo: Error: [Errno 2] Aucun fichier ou dossier de ce type
system:
 distro: Ubuntu
 codename: lucid
 architecture: i686
 kernel: 2.6.32-21-generic